NRGT26-2 Level Probe

Excl. VAT:	£2,674.91
Incl. VAT:	£3,209.89
Product Code:	GES-NRGT26-2-
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GESTRA NRGT 26-2 Capacitive Level Transmitter

The GESTRA NRGT 26-2 is a capacitive level transmitter designed for continuous water level measurement in pressurised steam boiler plants, hot-water systems, and condensate and feedwater tanks. Providing a linear 4–20 mA current output scaled across a calibrated 0–100% measuring range, it delivers accurate, reliable level data to compatible level controllers, enabling precise water level regulation with MIN/MAX alarm capability.

Engineered for demanding industrial and steam plant environments, the NRGT 26-2 features a stainless steel electrode rod with PTFE insulation, a powder-coated aluminium terminal box, and a robust IP65-rated enclosure. The transmitter is available in seven measuring range lengths from 300 mm to 1000 mm, all supplied at 24 V DC, making it suitable for a wide range of boiler and vessel installations. A galvanically isolated analogue output and 4-digit LED display ensure straightforward integration and clear status indication at the point of installation.

Key Features

Continuous 4–20 mA level output, linearly scaled 0–100% across the calibrated measuring range
Capacitive sensing technology — compatible with fluids of varying conductivity
Maximum service pressure and temperature: 32 bar at 238°C
PTFE-insulated electrode rod with 1.4404/F316L stainless steel screw-in body
IP65-rated terminal box with 4-digit 7-segment green display and red/green LED status indicators
Galvanically isolated analogue output — maximum output load 500 Ω
Rotary knob with push-button for menu navigation, parameter setting and test functions
24 V DC supply (SELV/PELV/CLASS2) — maximum power consumption 7 W
Compatible with GESTRA NRR 2-50, NRR 2-51, NRR 2-52 and NRR 2-53 level controllers
Can be installed in the same protective tube or level pot as a conductive NRG 1x-50 or NRG 1x-51 electrode
Available in seven measuring range lengths: 300 mm to 1000 mm

Typical Applications

Continuous water level measurement in pressurised steam boiler plants
Water level control in hot-water heating systems
Level monitoring in condensate tanks and feedwater tanks
External level pot installations on steam boilers
Feed line level sensing in industrial hot-water plants

Available Types

NRGT 26-2 — 300 mm Measuring Range — 24 V DC
NRGT 26-2 — 500 mm Measuring Range — 24 V DC
NRGT 26-2 — 600 mm Measuring Range — 24 V DC
NRGT 26-2 — 700 mm Measuring Range — 24 V DC
NRGT 26-2 — 800 mm Measuring Range — 24 V DC
NRGT 26-2 — 900 mm Measuring Range — 24 V DC
NRGT 26-2 — 1000 mm Measuring Range — 24 V DC

Product Specifications

Manufacturer	GESTRA
Model	NRGT 26-2
Sensing Technology	Capacitive
Connection	¾" – 14 NPT
Measuring Range Options	300 mm / 500 mm / 600 mm / 700 mm / 800 mm / 900 mm / 1000 mm
Output Signal	4–20 mA (proportional to level, galvanically isolated)
Maximum Output Load	500 Ω
Analogue Connector	M12, 5-pole, A-coded
Supply Voltage	24 V DC ±20% (SELV/PELV/CLASS2)
Power Consumption	Max. 7 W
Max. Service Pressure & Temperature	32 bar at 238°C
Reading Accuracy	±1% of set measuring range at operating point
Display Resolution	0.1%
Internal Processing Resolution	15 bits with sign (16 bits)
4–20 mA Output Resolution	15 bits (0.49 µA/digit)
Display	4-digit green 7-segment LED
Status Indicators	Red LED (error) / Green LED (OK)
IP Rating	IP65 (EN 60529) / NEMA Type 3R, 3RX, 5
Protection Class	III (SELV/PELV/CLASS2)
Service Temperature	0–70°C
Storage / Transport Temperature	–40 to +80°C
Air Humidity	10–95% (non-condensing)
Terminal Box Material	Aluminium alloy (3.2581 G AlSi12), powder-coated
Cover Tube Material	1.4301 X5 CrNi 18-10 stainless steel
Electrode Rod Insulation	PTFE
Screw-in Body Material	1.4404 / F316L stainless steel
Weight (300 mm measuring range)	Approx. 1.8 kg
Installation Position	Vertical; max. 45° inclination
Max. Cable Length	100 m
Compatible Level Controllers	GESTRA NRR 2-50, NRR 2-51, NRR 2-52, NRR 2-53 (with URB 55)
Approvals	UL 60730-1, CAN/CSA E60730-1, UL 60730-2-15, CAN/CSA E60730-2-15